Brüel & Kjær Sound & Vibration Measurement A/S is a renowned test equipment and measurement technology manufacturer throughout the world. Founded in 1942, Brüel & Kjær has had plenty of time to perfect its design and development techniques. The focus of the Brüel & Kjær brand is to create innovative solutions for the measurement and management of sound and vibration. Brüel & Kjær has come out with sought-after products such as audio analyzers, sound meters, sensors, amplifiers, probes, noise generators, graphic printers, human vibration units, microphones, filter sets, and recorders. Increase your return on investment with used and refurbished Brüel & Kjær products at ValueTronics.com.